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Cheap flights from Washington, D.C. to London from £207

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to London departing on 15/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to London

Cheap return flights

Logo
22:05 - 16:40IAD-SEN
13h 35m2 stops
Logo
07:15 - 19:50SEN-IAD
16h 35m3 stops
£544
Find Deal
Wed, 22 Oct - Sat, 1 Nov
Logo
22:00 - 19:35IAD-SEN
17h 35m2 stops
Logo
07:15 - 19:30SEN-IAD
17h 15m2 stops
£564
Find Deal
Thu, 30 Oct - Sat, 8 Nov
Logo
20:40 - 17:15BWI-SEN
16h 35m2 stops
Logo
07:35 - 18:40SEN-BWI
16h 05m2 stops
£564
Find Deal
Wed, 29 Oct - Tue, 4 Nov
Logo
21:30 - 19:35IAD-SEN
18h 05m2 stops
Logo
07:15 - 18:50SEN-IAD
16h 35m3 stops
£566
Find Deal
Thu, 30 Oct - Sat, 8 Nov
Logo
17:20 - 16:40IAD-SEN
18h 20m2 stops
Logo
07:15 - 20:30SEN-IAD
17h 15m2 stops
£568
Find Deal
Wed, 22 Oct - Sat, 1 Nov
Logo
22:05 - 19:35IAD-SEN
16h 30m2 stops
Logo
07:15 - 19:50SEN-IAD
16h 35m3 stops
£571
Find Deal
Thu, 23 Oct - Sat, 1 Nov
Logo
20:40 - 17:15IAD-SEN
16h 35m2 stops
Logo
07:35 - 18:30SEN-IAD
15h 55m2 stops
£577
Find Deal
Wed, 29 Oct - Tue, 4 Nov
Logo
22:25 - 19:40IAD-SEN
17h 15m2 stops
Logo
07:35 - 16:05SEN-IAD
13h 30m1 stop
£639
Find Deal
Tue, 28 Oct - Fri, 7 Nov
Logo
17:50 - 16:40IAD-SEN
17h 50m2 stops
Logo
16:55 - 15:15SEN-IAD
27h 20m2 stops
£684
Find Deal
Wed, 22 Oct - Sun, 2 Nov
Logo
17:45 - 13:30IAD-SEN
14h 45m2 stops
Logo
11:05 - 11:45SEN-IAD
29h 40m2 stops
£810
Find Deal
Mon, 22 Sep - Mon, 29 Sep

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. to London Southend Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 12 September 2025.
Use the filters below to find and compare flights from Washington, D.C. to London Southend Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Wed 22/10

22:05-16:40

2 stops13h 35m

London Southend

Sat 1/11

07:15-19:50

3 stops16h 35m

£544

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Thu 30/10

22:00-19:35

2 stops17h 35m

London Southend

Sat 8/11

07:15-19:30

2 stops17h 15m

£564

BaltimoreLondon

BWI - SEN

BWISEN

Baltimore/Washington

Wed 29/10

20:40-17:15

2 stops16h 35m

London Southend

Tue 4/11

07:35-18:40

2 stops16h 05m

£564

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Thu 30/10

21:30-19:35

2 stops18h 05m

London Southend

Sat 8/11

07:15-18:50

3 stops16h 35m

£566

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Wed 22/10

17:20-16:40

2 stops18h 20m

London Southend

Sat 1/11

07:15-20:30

2 stops17h 15m

£568

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Thu 23/10

22:05-19:35

2 stops16h 30m

London Southend

Sat 1/11

07:15-19:50

3 stops16h 35m

£571

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Wed 29/10

20:40-17:15

2 stops16h 35m

London Southend

Tue 4/11

07:35-18:30

2 stops15h 55m

£577

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Tue 28/10

22:25-19:40

2 stops17h 15m

London Southend

Fri 7/11

07:35-16:05

1 stop13h 30m

£639

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Wed 22/10

17:50-16:40

2 stops17h 50m

London Southend

Sun 2/11

16:55-15:15

2 stops27h 20m

£684

Washington, D.C.London

IAD - SEN

IADSEN

Washington, D.C. Dulles Intl

Mon 22/9

17:45-13:30

2 stops14h 45m

London Southend

Mon 29/9

11:05-11:45

2 stops29h 40m

£810

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. to London Southend Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to London Southend Airport?

Flight times from Washington, D.C. to London Southend Airport vary, but if you’re flying out of Baltimore and flying into London Heathrow Airport (one of the most popular routes), then the duration is 7h 05m on average. Another popular route from Washington, D.C. to London Southend Airport is flying from Washington, D.C. to London Heathrow Airport, which will take roughly 8h 15m. Keep in mind that layovers or delays could extend your travel time.

When to book flights from Washington, D.C. to London Southend Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to London Southend Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Washington, D.C. to London Southend Airport (WAS to SEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to London Southend Airport

Direct flights

None
There are no direct flights from Washington, D.C. to London Southend Airport. There are no popular flight routes from Washington, D.C. to London Southend Airport.
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  • How far is Washington, D.C. to London Southend by plane?

    A flight from Washington, D.C. to London Southend will travel around 3694.1 mi. By plane, this route typically takes 13h 35m.

  • When did momondo last update prices for flights from Washington, D.C. to London Southend Airport?

    Prices for flights from Washington, D.C. to London Southend Airport are updated daily.

  • How old do you have to be to fly from Washington, D.C. to London Southend Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to London Southend Airport.

  • What documentation or ID do you need to fly to London Southend Airport?

    The travel and health documents you'll need for your trip to London Southend Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Southend Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Luton
Milton Keynes
Maidstone
Gatwick
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Dover
Chelmsford
Hayes
Dartford
Winchester
Hounslow
Stansted

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to London. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to London?

momondo provides multiple filters to help you find the best flight to London from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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